Drilling-machine.



PATENTBD OCT. 3, 1905.

A. T. ANDERSON.

DRILLING MACHINE.

APPLICATION FILED JUNE 23,1904.

4 SHEETS-SHEET 1.

awwe/wtoz Jflm,

' No- 801,128. PATENTEDOOT. 3,1905.

- A. T. ANDERSON.

DRILLING MACHINE.

APPLIGATION FILED JUNE 23,1904.

4 SHEETSSHBBT 2.

Y m llill" Ullllll imng No. 801,128. PATENTED OOT. 3,1905. A. T.ANDERSON.

DRILLING MACHINE.

APPLICATION FILED JUNE 23, 1904 4 SHBETSSHEET 8.

a'mlvawtoz No. 801,128. PATENTED oo'r. 3,1905. A. T. ANDERSON.

DRILLING MACHINE.

APPLICATION FILED JUNE 23, 1904.

4 SHEETS-SHEET 4 if 63 8 "lllllii iifllllllllllllH J 5 f mmunumnlmimfinned wow 1 9 bM-aooco UNITED STATES PATENT OFFICE.

Specification of Letters Patent.

Patented Oct. 3, 1905.

Application filed June 23, 1904.. Serial No. 213,891.

To ctZZ whom, it may concern.-

Be it known that I, ALFRED .T. ANDERSON, a citizen of the United States,residing at Aurora, in the county of Dearborn and State of Indiana, haveinvented new and useful Improvements in Drilling-Machines, of which thefollowing is a specification.

One object of this invention is to providea drilling-machine in whichthe bit may be swung around to any desired point and readily adjusted toany desired height.

A further object of the invention is to provide means whereby thedrill-bit may be fed forward automatically and the speed of such feedingcontrolled.

A further object of the invention is to provide means for renderinginactive the automatic feeding means and feeding the bit by hand; and,finally, the object of the invention is to simplify the arrangement andconstruction of the parts and to increase generally the effectiveness ofthe machine.

These objects are attained by the use of the mechanism illustrated inthe accompanying drawings; and the invention consists in certain novelfeatures of the same, as will be hereinafter first fully described andthen particularly pointed outin the appended claims.

In the drawings mentioned, which illustrate the preferred embodiment ofmy invention, Figure 1 is a side elevation of the machine. Fig. 2 is aplan view of the same. Fig. 3 is a Vertical section taken on the line a"00 of Fig. 2, the standard or supporting-column being partly brokenaway. Fig. 1 is a horizontal section on the line y y of Fig. 3. Fig. 5is a detail elevation of the mechanism for automatically feeding the bitforward. Fig. 6 is a detail section on the line a 2 of Fig. 2. Figs. 7and 8 are detail views showing the manner of throwing the automaticfeeding mechanism out of gear and holding it in such position.

In carrying out my invention I employ a standard or column 1, having abase 2, which is secured to the floor of the shop or workroom andprovided at its upper end with an annular cap or ring 3, as shown. Inthe upper side of the base and the lower side of the ring or cap andadjacent to the side of the column or standard I form the annulargrooves 1, which receive the ends of a rack-bar 5 and hold the sameagainst the column, while at the same time permitting it to slide aroundthe column to any desired point, as will be readily understood. A sleeve6 is fitted around the column 1 and the rack-bar 5 and is provided v atan intermediate point of its length with an offset or box 7, in which isjournaled a short shaft 8, carrying a pinion 9 in mesh with the rack-barand having an angular end 10, which may be engaged by a wrench orcrank-handle when itis desired to raise or lower the drill, as will beunderstood. At the side opposite the ofi'set or box 7 the sleeve isconstructed with two lugs 11, which are drawn together by means of ascrew 12 to bind the sleeve around the column, and thereby hold theworking mechanism at any height to which it may be adjusted. On one sideof the sleeve 6 is formed a sleeve 13, arranged axially at a right angleto the said sleeve 6 and of a similar construction, having aclamping-screw 14 and carrying a short shaft 15, on which is a pinion16, meshing with a rack bar 17 on the side of a tube or beam 18, whichpasses through and is supported by the said sleeve 13 and supports theworking mechanism at its front end. The front end of the said horizontalsupporting beam or arm 18 is formed integral with or secured to thelower end of a guide-plate 19, having on its front side dovetailed ribs20 and a central vertical groove 21. The groove 21 receives and guides arack-bar 22 on the drill and motor casing 23, the said casing engagingand sliding upon the ribs 20, as shown most clearly in Fig. 2. On theback of the guide-plate is formed an offset or journal-box 2 1, in whichis mounted a shaft 25, carrying a pinion 26 in mesh with the saidrack-bar 22 and having a worm gearwheel 27 on its outer end, the casingof the said worm-wheel being integral with the said guide-plate 19. Onits lower rear side the worm-wheel casing is formed with a dependingoffset 28, in which is eccentrically mounted a shaft 29, having a worm3O meshing with the worm-wheel 27 and provided at its opposite ends witha shifting lever or handle 31 and a hand-wheel 32, respectively. Bythrowing the lever 31 down the eccentric throws the shaft up, so as tomaintain the worm 30 in mesh with the worm-wheel 27, so that by rotatingthe hand-wheel 32 the worm-wheel will ,be rotated and the shaft 25transmit the motion thereof directly to the pinion 26, which will thenact on the rack-bar 22, so as to cause the casing 23 to move up or down,as will be readily understood.

Mounted centrally in the casing 23 is the driving-shaft 33, which is theaxle or armature-shaft of an electric motor 34. The lower end of thedriving-shaft or motor-axle is stepped in a horizontal partition orplate 35 within the casing and is provided with gearteeth 36 just abovethe stepped portion. A vibratory plate 37 is pivotally mounted at itsrear or inner end on the upper side of the partition 35 and has itsfront end projecting through a horizontal slot 38 in the casing to holdthe plate in its adjusted position. The pivotal point of this plate is aboss on the partition, and through this boss is journaled a shaft 40,having its lower end bearing in the lower end of the casing. On theupper end of this shaft 40 is a pinion 41, which is in mesh with pinions42 43, mounted on studshafts carried by the plate 37 and arranged on theopposite edges of the plate. These pinions 42 43 mesh, respectively,with the gear-wheels 44 45, which are of different sizes and adapted tomesh with the gear-teeth on the lower end of the driving-shaft. N earthe lower end of the shaft 40 is secured a pinion 46, meshing with apinion 47 on the upper end of the drill-socket 48, the drill-socketbeing journaled in and supported by an extension or dependingprotuberance of the casing. From this arrangement it will be readilyseen that the drill may be rotated at a higher or lower rate of speed,as may be desired.

The upper end of the driving-shaft or motor-axle has a bearing in a cap49, which is fitted on and secured to the upper end of the casing, andgear-teeth 50 are formed on the upper end of the shaft in the samemanner as teeth 36 are formed on the lower end of the same. Thesegear-teeth are in mesh with the pinions 51, 52, and 53, which arearranged in different horizontal planes, are of different diameters,andare carried by a vibratory leverplate 54. These several pinions areadapted to mesh, respectively, with the toothed steps of a multiple gearwheel or pinion 55,and the leverplate is pivotally mounted on a centralboss of the cap, so that it may be thrown to one or the other side tobring the proper pinion into engagement with the said multiple gearaccordingly as it is desired to feed the drill faster or slower. Inorder to hold the plate in its adjusted position, I provide the latch56, adapted to engage one of a series of openings 57 in the cap 49 andheld in engagement with the same by a spring 58, arranged between theplate and the latch, as shown. In the form illustrated five openings areshown, numbered, respectively, "1, 2, 3, 4, 5. l/Vhen the latch engagesan even-numbered opening, none of the pinions 51 52 53 will engage thegear 55; but should the plate be thrown to either side,

so that the latch will engage one of the oddnumbered openings, theproper pinion will be brought into engagement with the gear. The gear 55meshes with the side teeth of a gear wheel 59, which is formed with abeveled gear upper portion meshing with a bevel-pinion 60, the shaft ofwhich is journaled in a sleeve supported by a post rising from arearward extension 61 of the cap. On the outer end of the said shaft issecured a bevel-pinion 62, which engages with a bevel-pinion 63, havingan elongated hub 64, which is journaled in a sleeve 65, depending fromthe extension 61 of the cap 49. The feeding-shaft 66 is feathered inthis beveled pinion 63 and its hub, so that it may readily slide throughthe same, but will be forced to rotate therewith. This feeding-shaft isconstructed in two sections connected by a universal joint 67, and onthe lower shorter section is secured a worm 68, which meshes normallywith the worm-wheel 27, hereinbefore described. This lower section ofthe feeding-shaft and the worm thereon are inclosed by an extension ofthe worm-wheel casing, and on the lower end of the shaft is secured ashifting plate or lever 69, which engages curved grooves in the casingand is provided with an extension or handle projecting through a slot inthe outer wall of the casing. Pivoted on the wall of the casing is alatch or trigger 70, the front end of which bears against the under sideof the plate 69 and is held up to the same by a spring 71, arrangedbetween the rear end of the trigger or latch and an offset 72 on thewormwheel casing to which it is secured. At its front end the trigger orlatch is provided with a depending handle 73, which projects downward tobe conveniently reached and grasped by the operator. If it is desired tothrow the automatic feed out of gear, the lever 69 is thrown forward,thereby carrying the worm 68 away from and out of mesh with thewormwheel, and as'it is thus swung forward the front end of the latchpresses up behind the said lever 69 and engages the same, so as to holdthe worm away from the wheel.

The operation of the machine will be readily understood from theforegoing description, taken in connection with the accompanyingdrawings. The proper bit having been fitted in the socket 48, the sleeve6 is moved around the column 1 and the pinions 9 and 16 rotated so thatthrough their action on their respective rack-bars the drill will bebrought directly over the work at the proper height. The screws 12 and1,4 are then turned home, so as to secure the drill in this position.The vibratory plate 37 is then adjusted so as to bring the pinion 44 orthe pinion 45 into mesh with the driving-shaft, so that the bit will berotated faster or slower, according to the nature of the Work or thesubstance to be bored.

If the nature of the work requires the drill to be fed by hand, the worm67 is held out of engagement with the worm-wheel 27, as beforedescribed, and the shaft 29 turned so as to bring the worm 30 into meshwith the worm- Wheel. The operator may then feed the drill forward inaccordance with his judgment by rotating the hand-wheel 32 on the shaft29, as will be readily understood. I prefer to feed the drillautomatically, and in most cases the automatic feeding is the moredesirable, as it saves the time and labor of the operator and permitsthe work to be performed faster than when the feeding is by hand. Theuse of the shaft 29 to remove the drill from the bored opening, however,is advantageous, as it saves wear and tear on the operating mechanism.To adjust the feeding mechanism, the lever 54 is adjusted to bring oneof the pinions 51 52 53 into mesh with the gear 55, so that the motionof the driving-shaft will be transmitted, through the said gear and thegears 59, 60, 62, and 63, to the feed-shaft 66 and the worm 68 therebyrotated. The rotation of the worm actuates the worm-wheel 27 and theshaft 25 of the same, so that the pin ion 26 is set in motion and actson the rackbar 22 so as to gradually move the motorcasing downward, aswill be clearly understood. The feeding mechanism having been thusproperly adjusted, the motor is started in the usual manner by closingthe circuit, whereupon the driving-shaft and the parts connectedtherewith will be set in motion.

The parts are compactly arranged and are simple in construction. Thedrill may be readily brought over the work at any point, and theadvantages of the machine are thought to be obvious without furtherdetailed reference thereto.

I do not restrict myself to the exact details of construction,combination, and arrangement herein set forth, it being obvious thatminor variations thereof not involving the exercise of invention may bemade by the skilled mechanic, and such departures from what is hereindescribed and claimed not involving invention I consider as within thescope and terms of my claims.

feeding-rod carried by the support and having a sliding bearing on thedrill-casing, a rack-bar on the casing, intermediate gearing on thesupport between the feeding-rod and the rack-bar, a motor in thedrill-casing, a plurality of gear systems mounted on the drillcasing,and means for bringing any one of said systems into connection with thefeedingrod and the motor, substantially as set forth.

3. In a drilling-machine, the combination of a support, a drill-casingmounted thereon, a feeding-rod, gearing driven by the said feeding-rodto move the drill-casing on the support, a motor in the drill-casing,gearing on the casing connected with the feeding-rod, a vibratory platemounted on the drill-casing, and a plurality of gears carried by saidplate and adapted to separately connect the motor with the gearingconnected with the feedingrod, substantially as set forth.

4. In a drilling-machine, the combination of a support, a drill-casingmounted thereon, a feeding-rod, gearing driven by said feedingrod tomove the drill-casing on the support, gearing mounted on the casingconnected with the feeding-rod, a vibratory plate mounted on the casing,a motor within the casing, a plurality of gears carried by the vibratoryplate and adapted to separately connect the motor with the gearingmounted on the casing connected with the feeding-rod, and a latchcarried by the said plate and adapted to lock it to the casing in anyone of its adjusted positions, substantially as set forth.

5. In a drilling-machine, the combination with the drill-casing and itssupport, of a feeding-rod carried by the support and having a slidingbearing upon the drill-casing means for operating said feeding-rod,intermediate gearing on the support connected with the lower end of thefeeding-rod to move the drillcasing on its support, and means for movingthe said lower end away from the said intermediate gearing withoutaffecting the relation of the upper part of the rod to the slidingbearing, substantially as set forth.

6. In a drilling-machine, the combination with the d rill-casing and itssupport, ofa feeding-rod carried by the support and having a slidingbearing on the drill-casing and having a lower vibratory section,intermediate gearing on the support between the said lower section andthe drill-casing to move the drillcasing on its support, means forsupporting and for moving the said lower section away from saidintermediate gearing into an inoperative position, and means for holdingthe same in said inoperative position, substantially as set forth.

7. In a drilling-machine, the combination with the drill-casing and itssupport, of a feeding-rod carried by the support and having a slidingbearing on the drill-casing and having a lower vibratory section,intermediate gearing on the support whereby the rotation of thefeeding-rod will move the drill-casing on its support, a shifting-plateat the lower end of the said rod to move the lower section of thefeeding-rod away from the intermediate gearing, and a trigger on thesupport adapted to automatically engage said plate and hold the saidlower section in the said disconnected position, substantially as setforth.- I In testimony whereof I afiix my signature in presence of twowitnesses.

ALFRED T. ANDERSON. Witnesses:

J. F. ANDERSON, O. J. ANDERSON.

